When water was discovered on Mars, people got very excited. Where there is water, there may be life. Scientists are planning new missions to study the planet up close. NASA’s next Mars rover is scheduled to arrive in 2010. In the decade following, a Mars Sample Return mission might be launched, which would use robotic systems to collect samples of Martian rocks, soils, and atmosphere, and return them to Earth. We could then analyze the sample to see if it contains any traces of life, whether extinct or still active. Such a discovery would be of tremendous scientific significance. What could be more fascinating than discovering life that had evolved entirely independently of life here on Earth? Many people would also find it heartening to learn that we are not entirely alone in this vast cold cosmos.

But I hope that our Mars probes will discover nothing. It would be good news if we find Mars to be completely sterile. Dead rocks and lifeless sands would lift my spirit.

Friday, September 19, 2008

Because we're pushing through the boundaries of science, working against assumptions and perceptions that have been fixed. A lot of people hold this idea that well, when you die you die, that's it. Death is a moment, you know you're either dead or you're alive. All these things are not scientifically valid but they're social perceptions.

However, ultimately what matters is, What's going on to a person's mind? What happens to the human mind and consciousness during death? Does that cease immediately as soon as the heart stops? Does it cease activity within the first 2 seconds, the first 2 minutes? Because we know that cells are continuously changing at that time. Does it stop after ten minutes, after half an hour, after an hour? And at this point we don't know.